These 0.4mm MK8 Nozzles for 1.75mm filament diameter are designed to be used in 3D Printing for high detail and precision, based on the Makerbot MK8 design and capable of fitting a wide range of 1.75mm hotend assemblies. Although they are not designed by Makerbot, they are made to the exact same specification with strict quality testing to ensure the same quality that you can expect from original MK8 nozzles.

These 3D Printer Nozzles are made from durable stainless steel, which is an excellent choice if you are eager to print Exotic Filaments like carbon fibre or glow in the dark, as the abrasive nature of such filaments can easily damage brass nozzles. Stainless Steel, in comparison, is far more resistant to wear and tear as well as damage like corrosion and pitting. These qualities make them ideal for harsh filaments, and will ensure less replacements over time as well as more time and money saved in the long run.

Quick Guide to Changing your 0.4mm MK8 Stainless Steel Nozzle:

When swapping out 3D Printer Nozzles from other components, we recommend utilising the hot tightening technique for optimal thermal coupling. To do this, simply follow these easy steps, while being careful not to burn yourself of course.

Unscrew the heat break from the heatsink by about half a turn, to be sure you are not tightening against the heat break in later stages.

Heat up your hotend to 285°C, but do not overshoot as you risk damaging your thermistor.

Remove the existing nozzle from the heater block and insert the new nozzle.

While firmly gripping the heater block, slowly tighten the nozzle. Be careful, however, that you not apply any torque through the heat break, as they are fragile and relatively easy to break when loose.

Turn off the heating unit and allow the hot side to cool.

Finally, once the nozzle is installed and cooled down, tighten the heat break back into the heatsink and ensure that there are no loose parts.

The reason for this is that the aluminium heater blocks used have a higher coefficient of thermal expansion than the brass and steel used in the nozzles and Heat Breaks. This results in a small gap being created between the nozzle and the break inside the block when the hot end is at temperature, but this only happens if the nozzle has been tightened while cold.

*Note: This is not supplied by E3D, although it is manufactured to the same specs and quality controlled locally to ensure it functions exactly as expected - while saving you money.

Why Should You Buy from DIYElectronics?

At DIYElectronics, our team of engineers are completely committed to supporting and developing the Open-Source movement and corresponding communities in South Africa. We offer complete support for all products purchased from us, and we are more than capable of giving full support throughout the product lifespan via our extremely helpful and responsive Support Desk.Additionally, all of our 3D printers come with a 6-month warranty on all parts during normal use, and we always make sure to stock every possible replacement part. This way, you can rest assured that you will never be left with a 3D printer, Arduino, Raspberry Pi or any other product that isn't working.